The raw material of dry ice is solid carbon dioxide, which forms two components after water pressure, one is gas carbon dioxide and the other is liquid carbon dioxide. Liquid carbon dioxide becomes dry ice, and gaseous carbon dioxide disappears with air. Dry ice after water pressure can be made into three kinds of dry ice, one is powder dry ice (untreated), the other is granular dry ice, and the last is brick dry ice.
Dry ice can be made of carbon dioxide storage tanks and can be bought in some commodity stores. The size of the carbon dioxide storage tank depends on how much dry ice you need to make. Prepare a work area, prepare all materials, need to prepare load-bearing tape, cans and plastic ice packs, and also need to prepare some safety equipment. The plastic ice pack should be bigger to avoid flying away, otherwise it will be a mess.
Matters needing attention in the use of dry ice
The temperature of dry ice is very low, and it is easy to transform into a frozen form. Under normal atmospheric conditions, it will change from solid to gas and volatilize. If you contact the skin for a long time, it is easy to cause similar burns, so be careful not to contact dry ice for a long time. Dry ice stays in a sealed room for 15 minutes. Be sure to open the door and keep it ventilated. If you are short of breath, you should leave the dry ice environment, otherwise accidents will easily occur.